Ventilator for chimneys or flues.



S. H. MILLMAN.

VENTILATOR FOR GHIMNEYS 0R PLUES.

APPLICATION FILED NOV. 18, 1909. 95 1 .508. Patented Mar. 8, 1910.

2 SHEETS-SHEET l.

ANDREW B. GRAHAM c0. l kuro-unmqmmifls. WASHINGTON. D. c.

S; H. MILLMAN.

VENTILATOR FOE GHIMNEYS 0R FLUESL APPLICATION FILED NOV. 18I 1909.

951 ,508 Patented Mar. 8, 1910.

2 SHEETS-SHEET 2,

SAMUEL H. IVIILLMAN, 01F PROVIDENCE, RHODE ISLAND.

VENTILATOR FOR CI-IIMNEYS OR FLUES.

Specification of Letters Patent.

Patented Mar. 8, 1910.

Application filed November 18, 190.9. Serial No. 528.751.

To all whom it may concern:

Be it known that I, SAMUEL H. MILLMAN, a subject of the Czar of Russia, residing at Providence, in the county of Providence and State of Rhode Island, have invented a new and useful Improvement in Ventilators for Chimneys or Flues, ofwhich the following is a specification.

This invention relates to ventilators for chinn'ieys or dues and pertains more particularly to that class of ventilators known as cowls wherein a rotatable member is adapted to be revolved to automatically regulate the draft.

The first object of this invention is to provide a cowl which will be more readily and quickly affected by winds of small strength.

A. second object is to provide a cowl in which the draft openings are easily increased or decreased at will.

A. further object of the invention is to construct a cowl which is adequately provided with means for protecting the interior of the chimney or flue, that is, the cowl is provided with means for collecting the moisture and drainage from rain or snow and conducting said drainage from the interior of the ventilator.

With these, and the further object of improving the general construction of ventilating cowls, in view, my invention will now be fully set forth and described, reference being had to the accompanying drawings, in which Figure 1 is a vertical sectional view of the cowl, Fig. 2 is a vertical sectional view at right angles to the section of Fig. 1, Fig. 3 is a cross sectional view, looking downwardly upon the dampers, Fig. f is a fragmentary sectional view showing the portion of one of the dampers, and Fig. 5 is a detail perspective view showing the principal oearin supporting the-revoluble element upon the stationary member.

Referring more particularly to said drawings, 1 indicates a base member of any suit able cross sectional formation but shown herein as square, and having mounted thereon a cylindrical casing 52. Said casing 2 is rigidly mounted on said base and is provided with exterior buttresses to sustain it in firm and lasting position upon said base.

A rotatable cowl member proper or elbow 3 of usual construction, and having the vane 3 mounted thereon, is carried by said casing in a manner to permit its ready and adequate response to the slightest breeze. Said elbow 3 is mounted as follows :Cross bars 5 and 6 are disposed diametrically within the casing 2, one at the upper end and one at the lower end, and at right angles to one another. Said cross bars consist of tubular rods soldered or otherwise secured within the casing 2, and provided centrally with jointsthrough which a vertical upright 01' rod 4- is projected and supported. Said rod' a extends above the upper end of the casing 2, and is adapted to project through aper tures formed in cross bars 7 and 8 suitably formed or secured within the vertical arm of the elbow 3. Said. cross bars 7 and 8 are thus rendered revoluble on said rod at.

The upper end of rod 4 is provided with a round bearing head, which may be formed by inserting or setting a ball 9 of suitable non-corrosive and wearing material, preferably glass, into the upper end of the upright or rod 4. Said ball or head 9 projects, with the end of the rod into a housing 11 formed or secured within the elbow 3, at a point above the rod 4:, and bears against a bearing plate 10, also preferably formed of glass. Said plate 10 is secured in the lower part of the housing 11 by being slid horizontally into a groove formed for that purpose. A cover 12 inclosing the lower end of the housing 11 protects the glass plate 10 at all points except the aperture through which the ball or head 9 operates. Thus it will appear that the elbow 3 is pivotally carried by a frictionless bearing, the cross bars 7 and 8 serving only to prevent lateral move- I ment of the elbow. The lower end of the vertical. arm of the elbow telescopes the upper end of the casing 2, thereby forming a joint which is adapted to maintain the interior of the cowl comparatively tight.

Located below the lower cross bar 6 and substantially parallel thereto is a horizontal sheet metal cross support 13 secured to the casing 2 at its ends, upon which are hinged the dampers 14c. Dampers l l are substandampers 14: and trickles down toward the hinges, it will find its way into said gutters 15, and be prevented fromdropping down into the chimney or fiue.

The interior annular part of the casing 2 or the base portion 1 may beso constructed) is provided with upwardly and inwardly inclined circular flanges which form gutters 16. Said gutters extend on each side to the gutters 15, the grooved element forming whichis seated into the gutter formed by said curved flange and is joined thereto,

wherebya continuous gutter is formed on each side of the cross-support 18, each gutter beinga substantial semi-circle. The dampers 1 aredownturned as at '17 around their, peripheral edges, whereby, when the dampers are fiat or closed, the moisture will be directed into thegutters 16, as fell as into thegutters 15. At points spaced around the casing 2 and communicating with the gutters 16 are; openingslS, by means of whlch the said gutters are-connectedwith the outside, andthrough which thecolleeted moisture is permitted toescape. Each aperture 18 is covered and protected by a cone-shaped hood 19, which is open only at its bottom so as to fully protect the opening, and still permit. the discharge of moisture there through.

Dampers 14 are operated from the inside.

by a chain 20, passing up through apertures 21 formed in support 13 to be connected to said dampers. Chain 20.is connected to one damper, as at 22; is then, passed through loop 23 on said other damper, and passes thence 'through said a erture 21, into the room orotherlocality from-which thecowl is to be controlled.-- A weight 24: suitably suspended from the chain 20, counterbalanees the dampers, which are weighted, as at 25, whereby said dampers may be set at anydesired position. Thus a perfect control of the amount of draftis maintained.

It is evident from the-above that the device described is well adapted to perform thefunetions set forth. The rotatable elbow or cowl proper is perfectly supported and balanced in practically frictionless manner, thus rendering it capable ofready response to the slightest breeze. The damper, and gutter construction and arrangement render it free of the objectionable features attendant on cowls or ventilators; which permit the access of rain,sleet or snow into the flue. Furthermore, the dampers arerenderedtselfbalancing and are capable of adjustment to anydesired size of opening.

Having thus described my invention, I. claim as new and desire to secure by Letters Patent 1..A cowl ventilator, comprising, in combination, a stationary member, an upright vertically extended above said stationary member, an elbow rotatably mounted on said upright, dampers diametrically hinged to said stationary member, and means for conducting moisture from said dampers and said stationary member to the outside of the latter.

2. A cowl ventilator, comprising, in combination, a stationary member, an upright vertically extending above said stationary member, an elbow rotatably mounted on said upright, dampers diametrically hinged to said stationary member, and gutters formed around the edges of said dampers to conduct moisture from the dampers and the station ary member, and said stationary member havingapertures located adjacent said gutters to permit the escape of the moisture.

3. A cowl ventilator, comprising, in combination, a stationary member, an upright vertically extended above said stationary member, an elbow rotatably mounted on said upright, a cross support carried by the lower portlon of sald stationary member, sem1c1r culardampers hinged to said cross support, gutters formed along the longitudinal edges of said cross support,gutters formed interiorly of said stationary member, and communicating with said first mentioned gutters, and said stationary member having apertures through which said gutters communicate with the exterior of said stationary member.

i. A cowl ventilator, comprisin in combination, a stationary member, an upright vertically extended above said stationary member, an elbow rotatably mounted on said upright, dampers diametrically hinged to said stationary member, means for conducting moisture'from said dampers and said stationarymember to the outside of the lat ter, means connected to one damper and slidably connected to the other and coin municating with the interior of a building whereby said dampers may be adjusted variously to regulate the draft.

In testimony whereof I have signed my name to this specification in the presence of two subscribing witnesses.

SAMUEL H. h'l'lLLMAN.

\Vitnesses ADA E. HAonR'rY, J. A. MILLER.

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